![](http://static.ddmcdn.com/gif/blogs/dnews-files-2013-03-mars-impact-200-130328.jpg)
The small chance that Comet 2013 A1 may slam into Mars in
2014 could be a scientific smorgasbord -- potentially motivating a
manned expedition to the red planet.
![](http://static.ddmcdn.com/gif/blogs/dnews-files-2013-03-fat-baby-stars-200x200-130327.jpg)
Star formation is a complex and beautiful process, but the
reasons as to why the biggest stars get so massive has been a mystery to
science.
![](http://static.ddmcdn.com/gif/recipes/the-moon-face-200-130327.jpg)
Actually, it does spin, just at the same rate it orbits Earth.
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